The following Policy modules are distributed with Perl::Critic.
(There are additional Policies that can be found in add-on distributions.) The Policy modules have been categorized according to the table of contents in Damian Conway's book Perl Best Practices.
Since most coding standards take the form "do this..." or "don't do that...",
I have adopted the convention of naming each module RequireSomething or ProhibitSomething.
Each Policy is listed here with its default severity.
If you don't agree with the default severity,
you can change it in your .perlcriticrc file (try perlcritic --profile-proto for a starting version).
See the documentation of each module for its specific details.